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Port 384 (arns)

IANA assigns port 384 to arns: A Remote Network Server System.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
arns TCP A Remote Network Server System David Hornsby -
arns UDP A Remote Network Server System David Hornsby -

Check what is listening on port 384

Linux: is anything listening on TCP 384?
sudo ss -tlnp 'sport = :384'
Linux: UDP 384
sudo ss -ulnp 'sport = :384'
Linux / macOS: which process owns the port
sudo lsof -nP -i :384
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':384 '
Windows (Command Prompt)
netstat -ano | findstr :384
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 384 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 384
From Windows
Test-NetConnection HOST -Port 384
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 384

Block port 384 in the firewall

ufw
sudo ufw deny 384/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 384 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 384 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 384' -Direction Inbound -Protocol TCP -LocalPort 384 -Action Block
ufw
sudo ufw deny 384/udp
iptables
sudo iptables -A INPUT -p udp --dport 384 -j DROP
nftables
sudo nft add rule inet filter input udp dport 384 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 384' -Direction Inbound -Protocol UDP -LocalPort 384 -Action Block

Related ports

382hp-managed-node383hp-alarm-mgr385ibm-app386asa

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.